Microphone



FIG. 1 is a front elevational view of a microphone showing my new design;

FIG. 2 is a left side elevational view of the microphone;

FIG. 3 is a right side elevational view of the microphone;

FIG. 4 is a rear elevational view of the microphone;

FIG. 5 is a top plan view of the microphone; and

FIG. 6 is a bottom plan view of the microphone. 

The ornamental design for a microphone, substantially as shown and described. 